汽轮机技术说明.doc

1.3.2 Steam Turbine Island 汽轮机岛1.3.2.1 Steam turbine 汽轮机The steam turbine shall be 3000 rpm, tandem compound, single reheat, regenerative, condensing, horizontally split, three-cylinder machine with six (6) uncontrolled extractions for regenerative feed heating. The turbine would be designed for main steam parameters of 140 kg/cm (abs) at 540C before emergency stop valves of HP turbine and reheat steam temperature of 540C at inlet to IP turbine. The LP turbine will exhaust against a condenser pressure of 0.087 kg/cm2. At turbine valve wide open (VWO) condition the turbo-generator set will be able to operate continuously with a throttle steam flow of about 105% turbine MCR condition The rated power output of turbo generator at TMCR shall be 150 MWe. 该汽轮机转速为3000rpm，串联，单再热、回热、凝汽式，水平中分，三个缸带6段不可控制抽汽回热给水加热。该汽轮机设计参数为：主汽门（紧急停止阀）前主蒸汽压力140 kg/cm (abs)/540，进入中压缸前的再热蒸汽温度为540。低压缸排汽对应的压力为0.087 kg/cm2。汽机阀门全开工况连续运行流经喷嘴蒸汽流量应为汽机MCR工况蒸汽流量的105%，汽轮发电机在TMCR工况时的额定输出功率为150mw。Steam turbine and accessories comprising but not limited to the following equipment/systems to make the system complete in all respects.汽轮机和辅机包含但不局限以下使系统完整的设备/系统。- Necessary number of emergency stop valves complete, including the necessary blow out provisions.必要数量完整的紧急停止阀，包含必要切断装置。- Required number of steam strainers for installation in the HP and IP emergency stop valves including housings for installation in the live steam line as well as additional steam strainers for the commissioning phase. 要求有一定数量的安装于高压和中压紧急停止阀的蒸汽滤网，包含用于安装主蒸汽管路的外壳，同时要求有用于调试阶段的额外滤网。- Necessary hydraulically operated control valves for the HP section of the turbine. 必要的用于汽轮机高压部分液压控制阀门。- Required numbers of hydraulically operated combined or separate intercept /emergency stop valves before the IP section of the turbine.- At least one (1) hydraulically operated emergency shut-off or emergency check valves before the IP section of the turbine. 必要数量使汽轮机中压部分紧急停止阀结合或分离液压操作机构。- Turning equipment A.C electrical motor driven or hydraulic operated device, complete, including manual turning equipment. 盘车设备交流电机驱动或液压操作，完整，包含手动盘动设备。 - Explosion diaphragms for LP outer casing. 低压缸防爆装置。 - Gland steam and sealing steam system complete, including all necessary control valves, pressure reducing and de-superheating station, condensers and motors driven vapor suction fans. 完整轴封蒸汽和密封蒸汽系统，包含所有所需控制阀，减压减温站，凝汽器和电机驱动的真空风机。- Governing system 调节系统- Flush cleaning provisions 大量清洗装置 - Complete noise and heat insulation, to the extent necessary. 完备的隔音隔热，达到必须的程度。- Steam turbine acoustic enclosure (removable type) with necessary ventilation and lighting system 带有必须的通风和照明系统的汽轮机隔音罩（可移动式）。- Spray water flooding system for fire protection 消防保护的喷水系统。 - Turbine supervisory, protection and governing system and complete DCS based control & instrumentation system. 汽轮机监测、保护和调节系统和DCS仪表控制系统。- Automatic turbine run-up system and automatic turbine testing system. 汽机自动启动系统和汽机自动试验系统1.3.2.2 Turbine oil plant 汽机油站Turbine oil plant complete, each containing at least: 完整汽机油站，每个至少包含：- Oil tank for normal operation including oil strainers 正常运行油箱包含油滤网- Main oil pump preferably directly driven 主油泵最好是主轴直接驱动。 - Necessary lube oil pumps like Auxiliary oil pumps & emergency oil pumps or bearings flushing pumps complete with AC / DC drives as applicable. 必须的润滑油泵，例如辅助油泵和紧急油泵或带有完整交流/直流启动合适的轴承冲洗用泵- Jacking oil pumps AC & DC operated with facilities for local, remote & automatic operation. 可以就地远方和自动运行的交流和直流顶轴油泵。- Turning gear oil pump (AC Motor driven) for supplying lube oil to the bearings during turning gear operation. 盘车油泵（交流电机驱动），提供盘车装置运行时轴承润滑油。- Control oil pumps for governing system with all accessories. 调节系统的控制油泵及其附件。- Oil vapor extraction fans at least one operating with A.C Drive and the other with D.C drive with oil separation in the piping. 至少一台交流驱动的排烟风机和其他直流驱动及管道油分离。- Lubrication oil coolers. 冷油器- Automatic Oil temperature control device 油温自动控制装置- Double oil filter for the complete lubricating oil flow 两台完整润滑油流量的油过滤。- Double oil filter for the complete control oil flow 两台完整控制油流量的油过滤。- Oil separator / purifier plant complete with all auxiliaries 完整的带附属设备的油分离/油净化装置- Sheet metal ducts for oil piping and other oil spray protection equipment. 油管路金属薄片管和其他油管路喷淋保护设备。- Auxiliary oil tanks, one for clean oil and one for dirty oil, each with the same capacity as the oil tank for normal operation, including the necessary interconnecting pipe work between the three tanks as well as the required pumps and central oil purifier. 辅助油箱，一个净油一个脏油，每个的容量跟正常运行油箱容量相同， 包含必须的连接三个油箱之间的管道及所需泵和中心滤油器。- Metallic expansion joint 金属膨胀节1.3.2.3 Condenser 凝汽器Condenser, complete, with spring supports, holding down bolts, plates with condenser flash tanks etc., including at least: the following: 凝汽器，整套的，带弹簧支撑，支撑地脚螺栓，凝汽器扩容器平台等， 至少包含以下：- Cooling water (CW) piping along with necessary instrumentation and control up to the terminal points in the turbine area including pipe supports, anchors, CW line expansion joints and fittings, isolating motor operated butterfly valves with matching flanges, suitable handling arrangement (s) for water box and butterfly valves. 冷却水管路带有所需仪表和控制连接至终端，汽机侧包含管道支架、锚杆支撑，循环冷却水管路膨胀节和配件，独立电机驱动的蝶阀及匹配的法兰，可以手动调整水箱和蝶阀。 - Vacuum breaker with provision for manual operation locally or from the central control room. 真空破坏装置规定可以手动在就地操作或在主控制室。- Automatic venting of the cooling water chambers at outage of cooling water pumps. 循环冷却水室应有自动排气，在循环冷却水泵中断时。- Vacuum pumps of adequate capacity shall be provided to maintain the vacuum in the condenser by expelling the non-condensable gases. One vacuum pump will operate during normal plant operation and during start-up, two units will be operated, such that the desired vacuum can be pulled within a short time. 应提供足驱除不凝结气体维持凝汽器真空的够容量的真空泵。 电厂正常运行中，一台真空泵运行，在启动阶段，两台运行， 真空泵的设计应该可以再短时间内达到设计真空值。- Main condensate extraction pumps of adequate capacity having sufficient margin on head and flow, complete with motor drive and minimum flow device. 主凝结水泵应该有适当容量和足够压头、流量，配套有驱动电机和 最小流量装置（再循环）。Additional tapping points complete with 额外取样点包含：- HP and LP drain receivers or manifolds 高压和低压疏水回收装置或集水箱- Circulation water pipe work and valves local to condenser within the turbine building complete with butterfly valves, RE joints and instruments. 汽机房的凝汽器循环水管道和阀门带有整套蝶阀、RE膨胀节和仪表。- All necessary pumps and sampling connections for routine testing of the quality of water. 用于例行水质检验的所有必须泵和取样口。- Instruments, gauges, controls and panels. 仪器、仪表、控制器和面板。 1.3.2.4 Turbine bypass station 汽机旁路站- HP bypass station for dumping the steam from main steam line to the Cold reheat line by bypassing the HP turbine complete with the associated actuating and pressure & temperature control systems.- 高压旁路站是通过旁路汽轮机的高压缸将主蒸汽从主蒸汽管线通向冷段再热管路，带有相关执行器和压力温度调节系统。 - LP bypass station, for dumping the steam from Hot reheat steam line to the condenser by bypassing the IP & LP turbines complete with the associated actuating and pressure & temperature control systems. 低压旁路站是通过旁路汽机的中压低压缸将热段再热蒸汽转向凝汽器，带有相关执行器和压力温度调节系统。1.3.2.5 Feed water System 给水系统- Boiler Feed Water pumps of adequate capacity having sufficient margin on head and flow with electric motor drives complete with all accessories with booster pumps complete with coupling and coupling guards. 锅炉给水泵应是适当的流量，由电机驱动并带有附件整套前置泵 和联轴器、联轴罩，应有足够的压头和流量余量。- Feed control station with low load and full load control valves with motorised inlet and outlet valves. 给水控制站带低负荷和满负荷控制阀并有进出口电动阀门。- Lube oil system for the BFP and variable speed couplings complete with main and auxiliary oil pumps, oil tanks, oil coolers, oil filters etc. 锅炉给水泵和变速耦合器润滑油系统配有主、辅油泵，油箱、油耦合器、油滤网等。For each feed pump set: 每台给水泵：- 1 (one) complete minimum-flow system with minimum-flow valve, flow - measuring device, start-up line, cascade throttling unit, pipe work, valves etc. 一整套带最小流量阀的最小流量系统，流量测量装置，启动管路 节流站、管路、阀门等。- All necessary associated valves including one fine mesh strainer for the suction line, as well as one additional strainer insert for the commissioning period. 吸入管路所有必须的相关阀门包含一个细滤网，同时一个额外的滤网应提供用于调试期间。- Gland sealing water system 密封水系统- Mechanical seal cooling systems 机械密封冷却系统- Thermal lagging and cladding 热保温和覆层 - Appearance cover 外罩- Acoustic hood 隔音罩1.3.2.6 Feed water heating system 给水加热系统- Required number of LP & HP heaters, Drain coolers etc., complete with pipes, valves instruments, controls and all necessary equipment, supports, platforms, rails (if required), handling devices etc. 所要求数量的低加和高加、疏水冷去器等，整套的管路、阀门仪器、 控制和所有必须的设备、支撑、平台、栏杆（如果要求）操作机构等。- Gland steam condenser and its auxiliaries. 轴封蒸汽冷却器及其附件- HP heaters and LP heaters bypass as required and taking into account the bypass modes of operation. 高压加热器和低压加热器旁路应该按照要求并考虑旁路运行模式。- Heater drain pumps (if applicable). 加热器疏水泵（如果合适）。1.3.2.7 Feedwater tank with deaerator for feedwater system 给水系统带除氧给水箱Feed water tank with de-aerator and vent steam condenser, complete, with all stub pipes, stiffeners, baffle plates, steam heated stand pipe, strainers upstream of the de-aerator spray nozzles,